[PATCH hwc] platformdrmgeneric: get the gralloc usage directly from the handle

[Robert Foss]

Hey Rob,

I tested the patch on the imx6/etnaviv platform, and it all works.
So I pushed the patch with t-b && r-b tags attached.


Rob.

On Fri, 2017-10-06 at 17:20 -0500, Rob Herring wrote:
> There's no point in using a gralloc perform() op to retrieve the
> usage as
> it is already stored in the handle like width, height, format, etc.
> So just
> copy it to the hwc_drm_bo_t and get it directly.
> 
> Signed-off-by: Rob Herring <robh at kernel.org>
> ---
> I was a bit quick on the trigger with the previous patch. This one is
> a 
> dependency for it.
> 
>  drmhwcgralloc.h        | 1 +
>  hwcutils.cpp           | 8 ++------
>  platformdrmgeneric.cpp | 1 +
>  3 files changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drmhwcgralloc.h b/drmhwcgralloc.h
> index 765c8979d2df..c4a42eaf1c54 100644
> --- a/drmhwcgralloc.h
> +++ b/drmhwcgralloc.h
> @@ -56,6 +56,7 @@ typedef struct hwc_drm_bo {
>    uint32_t width;
>    uint32_t height;
>    uint32_t format; /* DRM_FORMAT_* from drm_fourcc.h */
> +  uint32_t usage;
>    uint32_t pitches[4];
>    uint32_t offsets[4];
>    uint32_t gem_handles[4];
> diff --git a/hwcutils.cpp b/hwcutils.cpp
> index 00915757469e..53a7d82889b8 100644
> --- a/hwcutils.cpp
> +++ b/hwcutils.cpp
> @@ -159,12 +159,8 @@ int DrmHwcLayer::ImportBuffer(Importer
> *importer,
>    if (ret)
>      return ret;
>  
> -  ret = gralloc->perform(gralloc, GRALLOC_MODULE_PERFORM_GET_USAGE,
> -                         handle.get(), &gralloc_buffer_usage);
> -  if (ret) {
> -    ALOGE("Failed to get usage for buffer %p (%d)", handle.get(),
> ret);
> -    return ret;
> -  }
> +  gralloc_buffer_usage = buffer.operator->()->usage;
> +
>    return 0;
>  }
>  
> diff --git a/platformdrmgeneric.cpp b/platformdrmgeneric.cpp
> index aa3d0faee7c0..741d42b6ac33 100644
> --- a/platformdrmgeneric.cpp
> +++ b/platformdrmgeneric.cpp
> @@ -116,6 +116,7 @@ int
> DrmGenericImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t
> *bo) {
>    bo->width = gr_handle->width;
>    bo->height = gr_handle->height;
>    bo->format = ConvertHalFormatToDrm(gr_handle->format);
> +  bo->usage = gr_handle->usage;
>    bo->pitches[0] = gr_handle->stride;
>    bo->gem_handles[0] = gem_handle;
>    bo->offsets[0] = 0;